El 11/09/17 a las 14:52, Mike Bayer escribió:
> Please provide all mappings including the missing "Prestacion" class
> as well as exact information on which classes have their own tables or
> not.The code should be a mappings I can paste into a .py file and
> run to see the error you are
Hi list.
I guess I messed it.
I built an app on the premise I can build two different relationships
relying on the same field. My data model is basically as below. Class
names are roughly translated from Spanish. Please read comments in
Charge subclasses to grasp the problem.
class
Hi Wayne.
El 02/06/17 a las 06:43, Wayne escribió:
Hi,
Does anyone have any experience, links to open source code or anything
else that shows the integration of PyQT5 with SQLAlchemy?
I'm using SQLAlchemy with PyQt4. My experience is valid for PyQt5 using
QtWidgets module, QtQuick is a
Hi list.
I just noticed that if I retrieve an object, and close the session
letting the object in detached state, then I can delete the object from
the database using a new session simply issuing session.delete(),
without merging it first. SQL Alchemy simply emits the DELETE and that's
it,
El 19/03/15 a las 10:34, Michael Bayer escribió:
While the select_from() still does correctly the A/B join, the filtering
condition is missing, so select_from(C) becomes the same as select_from(B).
did you try 1.0.0b1 for this? The mechanics for single-table have been
improved in this
Hi.
I have an inheritance hierarchy on the form, C inherits B (with single
table inheritance), B inherits A (with joined table inheritance).
The next query works perfectly:
session.query(C)\
.join(C.related_objects)
.filter( ... ) # Unrelated filtering conditions
as the resulting
Hi.
I'd like to know what's the recommended approach to keep the state of
the session and the associated objects when session.flush() fails, in
order to being able to fix the cause of the problem and retry the operation.
For cases with a single object hierarchy, I think using session.merge()
